You can use the Karabiner for macOS, and consider Sharpkeys, Keytweak, Keymapper, AutoHotkey for Windows. However, some keys such as the fn key, may not be remapped.
How to remap / reprogrammable reassign keys?
You can use the Karabiner for macOS, and consider Sharpkeys, Keytweak, Keymapper, AutoHotkey for Windows. However, some keys such as the fn key, may not be remapped.